Tor, the question of using Settipani is quite interesting. It's probably your best contribution to this discussion so far.
In the early days the curators had the problem of what to do in areas of the tree where there are either competing theories or where the line is strictly unknown but traditional or theoretical versions extend it.
One solution we tried was conforming Geni lines to Settipani. There was always a Settipani version already on Geni, competing with other versions, so it was just a question of using that as the template, and not cutting speculative lines if they were supported by Settipani.
That system really didn't work very well. It seemed like they only way to compromise with people who get upset when they lose illustrious ancient lines (and not get lynched), but it was contrary to the methodology of modern genealogy.
The way we do it now is much better. We look for the majority opinion of contemporary experts.
Just as aside, you say experts use Settipani as a "true Source". No, no, no. You still aren't understanding sources. And actually, you aren't understanding Settipani's methodology either. Let's leave that for another time.